ZF 4108.311.048 WASHER | OEM Genuine Part

Overview

The ZF 4108.311.048 WASHER is a precision-engineered OEM genuine component designed for heavy-duty construction machinery transmissions. This hardened steel washer functions as a critical load-spreading element between fasteners and transmission housing surfaces, preventing galling and maintaining proper clamp load in high-vibration environments. Installed within the planetary gear assembly or clutch pack retention system, the SKU 4108.311.048 ensures axial clearance remains within factory tolerances. When paired with the 4108101057 HOUSING and 4108201177 HOUSING, this washer forms a sealed interface that withstands extreme thermal cycling and torque spikes common in wheel loaders and excavators.

Symptoms of Failure

• Transmission oil seepage at housing joints: A worn 4108.311.048 washer allows micro-movement between mating surfaces, breaking the seal created by the 0636302056 SCREW PLUG and causing slow fluid loss.
• Intermittent gear engagement hesitation: When the washer compresses beyond specification, clutch pack clearance increases, leading to delayed shifts under load.
• Metallic debris in transmission fluid: Fretting corrosion from a failed washer introduces steel particles that accelerate wear on the 4108301304 BEARING COVER and adjacent thrust bearings.
• Abnormal housing bolt loosening: Loss of washer thickness reduces preload, causing fasteners to back out during operation.

Technical Specifications

Compatibility

This washer is dimensionally and metallurgically matched for ZF WG180, WG200, and WG211 series transmissions used in construction machinery from manufacturers including Liebherr, Caterpillar, and Volvo CE. It also applies to select ZF 4WG-310 and 6WG-350 torque converter assemblies. Always verify fitment with your transmission serial number before installation. For complete rebuilds, consider replacing the 4108306173 GASKET and 0750110040 SHAFT SEAL simultaneously.

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